Add log message to bridge init

Reviewed By: mhorowitz

Differential Revision: D2983352

fb-gh-sync-id: d87fcb7d7728115ae45cdb6f061fa094da7dfba8
shipit-source-id: d87fcb7d7728115ae45cdb6f061fa094da7dfba8

ReactAndroid/src/main/java/com/facebook/react/bridge/CatalystInstanceImpl.java

@@ -71,6 +71,7 @@ public class CatalystInstanceImpl implements CatalystInstance {
       final JavaScriptModulesConfig jsModulesConfig,
       final JSBundleLoader jsBundleLoader,
       NativeModuleCallExceptionHandler nativeModuleCallExceptionHandler) {
+    FLog.d(ReactConstants.TAG, "Initializing React Bridge.");
     mReactQueueConfiguration = ReactQueueConfigurationImpl.create(
         ReactQueueConfigurationSpec,
         new NativeExceptionHandler());